fixedSize qrcode widget

gui/qt/main_window.py

@@ -687,7 +687,7 @@ class ElectrumWindow(QMainWindow):
         grid.addWidget(clear_button, 3, 2)
         grid.setRowStretch(4, 1)
 
-        self.receive_qr = QRCodeWidget()
+        self.receive_qr = QRCodeWidget(fixedSize=200)
         grid.addWidget(self.receive_qr, 0, 4, 5, 2)
 
         grid.setRowStretch(5, 1)

gui/qt/qrcodewidget.py

@@ -13,10 +13,13 @@ from electrum.i18n import _
 
 class QRCodeWidget(QWidget):
 
-    def __init__(self, data = None):
+    def __init__(self, data = None, fixedSize=False):
         QWidget.__init__(self)
         self.data = None
         self.qr = None
+        self.fixedSize=fixedSize
+        if fixedSize:
+            self.setFixedSize(fixedSize, fixedSize)
         self.setData(data)
 
 
@@ -26,8 +29,9 @@ class QRCodeWidget(QWidget):
         if self.data:
             self.qr = qrcode.QRCode()
             self.qr.add_data(self.data)
-            k = len(self.qr.get_matrix())
-            self.setMinimumSize(k*5,k*5)
+            if not self.fixedSize:
+                k = len(self.qr.get_matrix())
+                self.setMinimumSize(k*5,k*5)
         else:
             self.qr = None